Sex physiology of pigs

... V1 -..)

APPENDIX 5. TABLE I. The Age in Days and the Weight in Pounds of the Large Black and Large White Gilt at the Age

of

Sexual Maturity. (N.B.-Litter mates are grouped.) LARGE BLACKS. LARGE WHITES. -

I

Age.

I

Wght. Pig

I

Age.

I

Wght. Pig

I

Age.

I

Wght. Pig Pig

I I

Pig

I

Ag<

I

Wght Pig

I

Age.

I

Wght. No. No. No. No. Age. Wght. No. No. --~----------

J

17 279

I

¹⁹

1 l102 250 163 { 156 207 189 17 216

I

178 100 248 222 1148 221 148 18 202 130 105 231 250 157 181 176 18 223 173 ItO! 260 217

r

¹⁹⁹

129

r

19 201 142

ros

171 249 { 160 205 175 19 231 I 185 I 102 201 !53 150 196 167 20 212 I 150 109 174 216 161 185 148 36 249 206

~

103 346 307 152 219 140 ~ 21 190 I 116 110 214 220 163 238 196 37 245 203 1104 210 165 154 212 170 22 213 161

t il

I 285 298 {164 270 268 47 209 243 105 270 235

r

²²⁵

197 l 23 213 156 112 248 295 166 259 182 )> 49 212 278 l106 232 167 156 184 160 24 208 172

f"

281 216

r

178 161 50 197 219 109 207 203 !57 177 144 30 206 197 116 293 260 171 237 208 54 188 178 1113 247 !50 159 314 174

r

¹⁷⁹

201 118 204 183 173 215 202

<

56 213 161 I 115 217 122 192 208 213 39 257 200 121 210 181 176 217 182 57 214 202 ~ 116 219 164

r

165 233 135 41 165 184

r

¹⁹⁴

195 ~177 227 187 ( 59 208 175 > 118 252 186 \_166 296 201 u44 230 203 124 217 178 178 226 173 ~ 62 213 198 119 232 190 167 193 160 u45 181 174 125 215 179 r79 227 174

r

63 214 188 121 183 159

r

²⁹⁰

253

r

¹⁸¹

153 126 226 181 ISO 262 208 64 213 150 122 247 195 170 290 199 47 ISO 120 128 192 172 181 274 242 65 207 141 123 161 115 175 270 221 48 200 169

r

²⁰²

155 1182 238 200

~

66 203 190 >124 184 171 177 245 179 49 218 128 130 269 177 I 183 257 188 67 206 172 125 209 166

1

178 282 268 ~ 50 209 168 131 222 132 ~ 184 192 164 68 206 197 126 21 I 177 ~ 180 186 126 52 213 171 134 197 190 ~186 237 193 1 69 216 187 128 212 146 182 249 229

I

54 242 230 ~ 136 194 176 187 206 155 l 70 209 170 131 200 163 {183 185 137 55 191 171 137 183 167 ~ 199 186 122 71 196 163

f"

223 172 184 229 196

I ;~

201 165 l138 224 150

f

191 208 165

rl

188 198 134 205 174 185 256 206 243 150 132 178 126 192 235 170 187 165 135 245 164 187 259 180 58 236 172

1

143 222 158 193 265 183 74 188 192 136 225 178 188 185 153 59 216 188 ~ 144 229 166 L194 188 156 75 185 ISO

r

²⁴¹

157 189 204 160

l

60 193 151 145 217 153 195 215 165 76 187 200 138 230 131 190 185 154 61 210 151 }146 227 191 [206 247 198 77 181 129 140 205 138 191 186 129 1 62 236 168 147 196 194 l_207 247 175 ) 79 184 121 142 177 141 193 186 140 l 63 209 152 l_148 196 173 201 244 187

l

80 187 256 143 221 138 194 260 177 89 242 143 151 256 168 211 238 158 82 183 148 {145 249 195 195 185 123 94 237 155

r

1s3 202 194 J215 201 168 J 96 205 194 146 250 204 196 184 166 97 249 141 l_154 202 174 l_217 229 217

l

98 201 186 147 205 181 198 185 124

11 00

218 126 155 194 217 221 213 176 ~ 101 248 140 -

~ >'Ji t:d d ::0 0 tT1 ~

SEX PHYSIOLOGY OF PIGS.

TABLE II.

Frequency Distribution of the Interval of Pro-oestrus and Metoestrus.

-

PRO-OESTRUS. I METOESTRUS.

Class Interval

(Hours). Large Large Large Large

Blacks Whites Blacks Whites

Number. Number. Number. Number.

0 31 30 0 4

3 32 36 30 28

6 25 46 74 72

9 39 36

I

84 67

12 29 36 71 50

15 23 23 33 20

18 26 16 16 19

21 13 22 4 3

24 6 19 4 7

27 7 13 0 -

30 3 5 I ^-

33 3 11 2 -

36 3 4 - -

39 3 4 ^{- -}

42 3 3 ^{- -}

45 5 2 ^- -

48 I 3

I

^-

-

51

-

^{4 - -}

54 1

I

- I ^-

-

57 1 -

I

^{- -}

60 1 - ^- -

63 -

I

- ^- -

66 - -

I

- -

69 1 ^{- -} -

TABLE III.

Sample Page of Pen-record Book.

I PIG No.

Date. Hour. Remarks.

186

I

¹⁸⁷

I

¹⁹⁶

I

¹⁹⁸

11.9.43 ... 3 a.m ...

ss I

^{H ss}

I

sS No. 186 served 10.30 p.m. by L.B. boar 6a.m ... SB H ss

ss

^{No. 15.}

9 a.m ... SB LH ss

ss

12 noon .... SB LH sS

ss

^Coitus=3 min. 30 sec.

3p.m ... H LH sS

ss

^{Temp.=102·3 F.}

6p.m ... H OH sS

ss

9p.m ... H ^- sS

ss

12m.n ... H ^- sS

ss

I

158

J. F. BURGER.

TABLE IV.

Duration (in Hours) of Consecutive Oestrous Periods in Large Black and Large White Gilts Commencing at Puberty Oestrus.

(N.B.-Litter mates are grouped.)

LARGE BLACKS. LARGE WHITES.

Pig

~o. l Pu~~~ty. ^!

^2nd _I ^3rd

_I

^{4th Pig}

No. , Pu1~rty. ⁱ

^2nd

_I

^3rd

_I

^4th

I

I

I

I

48 48 48 I 42 57 17 48 48 45 42

r49

I

57 48

I

^{54 57 19 48 42 39 36}

l50 60 69 60 Sl { 62 45 45 39 39

52 5 l 57

I

^{63 63 63 39 30 36 33}

54

I

^{42 78 42 66}

r

^{64 57 54 45 45}

39 63 69

I

^{66 54}

r

^{48 54 66 48}

rs7 69 60 60 69 67 54 I 48 5 l 45

l60 45 45 57 60 68 60 I 45 45 42

63 75 78 78 - 69 57

I

^{57 54 45}

89 57 60 54 63

l

70 63 54 51 51

r

^{101 102 108 60 39 60 69}

^I

^{57 45 54 36 I 60 60 54 63 54 57 60 87 ~}

^r

^{71 72 73 74 48 48 54 57 48 42 54 63 54 60 45 42 42 Sl Sl}

l_ 110 54

I ^{60 I 72 - _} 76 54 57 51 48}

{ ll1 78 84 ^I 78 - 79 36 36 39 39

112 60 ^! 69

I

^{72 60 l_ 80 45 48}

I

^{42 36}

116 57 I

I

^{54 66 - 82 39 45 I 33 30}

121 57 _I 69

I

^{51 69 { 96 48 48 I 48 51}

r

^{124 125 126 !132 28 I 51 54 69 54 60 57}

^{I I} _I

^{54 57 69 57 51 51}

^I

^{I 51 75 60 72 51 ---63 48}

^r

^{100 104 98}

^g~

^{I 45 69 60 60 Sl 66 69 57 72 51 66 60 60 63 60}

^I

^-

^-

^--

I

60

I

^{Sl lOS 54 66 60 -}

f 30 51 72 69 - 106 72 69 66 -

13! Sl

I

66 63

I

^{- 1 1o9 45 54 54 -}

p34 54 66 66 75

i f l3 45 54 69 -

"\ 136 33

I ^{78 87 - !16 54 51 48 -}

1 !37 45 75 72 -

~ r

^{51 36 36 42}

Ll38 69 72 66 66 69 63 60 60

[ 144 84 57 66

-

¹²¹ 48 66 63 -

l_145 48 96 69 84 122 48 75 72 -

147 27 54 54

I

^{- 123 45 48 75 51}

151 60 75 66 - 124 57 57 57 63

[153 57 66 69 125 42 45 54 -

\)54 54 51 54 66 [_126 48 48 51 -

155 _I 81 78 75 48 128 69 51 54 -

{ 156 ^I 54 84 72 72 132 33 33 36 33

157 _! 69 75 75 66 143 45 42 48 48

161

I

^{90 75 48 87 145 30 48 39 30}

163 48

I

^{48 72}

I

^{72 154 42 51 57 45}

166

I

^{75 66 72 78 !56 45 54 45 45}

f l71 72

I

^{72 81}

I

^{75 167 84 45 45 36}

{ 173 81 78 78 75 170 36 33 45 36

176 72

I

^{69 72}

I

^{69 177 39 33 36 27}

178 48 57 60 78

r80 36 39 57 57

180 69

I

63 60 ^I _I 54 182 39 36 45 39

r 182 63 81

I

⁶³

I ^{69 183 57}

I

Sl 54 57

[_184 51 60

I

^{66 54 184 I 30 IS 33 42}

186 60 60 66

I

⁵⁴

'{"'

^{45 36 39 39}

188 54 69 63 66 190

I

²⁷

I

24 27 30

193 60 57 60 72 193 ' _' 45 24 36 39

195 36 63 60 66 195 33 24 36 33

206 54 63 63 60 191 33

I

27 36 39

211 I ^{54 63 66 54 - - - - -}

217

I

^{63 57 54 51}

I

^{- - - - -}

221 60 60 66 66 - - - - -

159

SEX PHYSIOLOGY OF PIGS.

TABLE

v.

Duration (in Hours) of Gilt, Sow, Postpartum and Pos1weaning Types ^CYj Oestra in Large Black and Large White Pigs.

Large Black.

48 57 60 51 42 69 45 63 75 57 60 39 60 69 54 78 60 57 57 51 54 69 54 60 57 51 51 54 33 45 69 84 48 27 60 57 54 81 54 69 90 48 75 72 81 72 48 69 63 51 60 54 60 36 54 54 63 60

GILT.

Large

I

^White.

I

I

I 48 48 45 39 57 48 54 60 57 63 48 54 57 48 54 36 45 39 48 69 60 60 51 45 54 72 45 45 54 51 69 48 48 45 54 42 48 69 33 45 30 45 42 84 36 39 36 39 57 30 45 27 45 33 33

I Large Black.

63 75 72 69 75 90 48 42 69 84 75 63 66 66 90 66 81 72 57 66 51 57 57 78 72 66 66 64 63 48 63 63 60 63 63 66 69 69 57 60 69 72 93 60 78 69 105 81 84 93 54 63 63 63 72 51 66 75

Sow.

I

I

Large White.

45 54 66 48 57 60 54 39 45 45 66 45 54 33 45 48 45 51 72 57 63 60 45 48 48 48 45 48 72 60 45 66 36 48 39 42 39 54 57 48 42 42 48 45 57 42 48 42 39 45 48 48 54 48 57

POSTPARTUM. POSTWEANING.

Large

I

Large Large

I

Large Black. White. Black. White.

66 87 66 54

57 87 63 54

66 60 72 60

90 66 72 84

72 93 66 57

132 93 69 42

84 36 48 69

117 54 63 54

72 36 66 33

54 30 51 51

84 63 63 51

51 81 66 45

54 39 66 54

75 45 81 51

93 57 75 69

I 63 51 51 51

84 72 66 54

51

I

66 60 81

78 81 72 54

60 90 72 45

66

I

72 78 51

I 60 57 42 57

I

^{51 63} ₆₃ ^{42 57} ₈₁ ^{69 75} ₅₁ ^{48 51} ₇₂

I

36 60 72 54

75 69 63 72

60 63 69 45

81 30 33 51

54 - 72 118

69 - 72 60

81 - 63 57

72 - 63 45

63

I

^{- 84 45}

75 - 54 66

36 - I 72 72

60 - 51 63

54 - 54 -

57 - 45 ^-

45 - 75 -

51 - 78 -

45 - 54 ^I -

75 - 63 -

75 - 102 ^-

99 - - -

- - ^- -

-

160

"'

c- oo w I o- ... a-, ...

--- Pig I Oestrus.[Oestrousllnter- No. Cycle. oestrus. ft7a [ 54 525 471

1

33 489 456 17

I

45 471 426 51 468 417 45 480 435 48 504 456 18 48 459 I

411 48 462 414 45 480 435 42 I 483 I

441

I

33 477 444 I 42 465 423 42

I

⁵⁰⁴

462 19 48 480 432 42 453 411 39 I

486 447 36 486 450 39 441 402

~21

48 471 423 63 741 678 I 45 531 486

l

48 507

I

459

r32

48 513 465 57 489 432 48 471 423

l

33 42 486 444

~47

39 453 414 54 477 423

I

45 489 444 45 465 420 33 459 426 ~ 33 456 423 149

27 468 441 54 474 420 42 627 585 r50

36 447 411 51 495 444 33 486 453

I

39

I

489 450 30 486 456

I 54 1

L

I

F

(59 62 163

~64 I

~ I

I 165 I

48 51 39 66 39 45 45 42 57 48 45 45 45 39 39 39 39 36 33 30 48 36 30 57 54 45 48 48 48 72 60 45 36 48 39 42 48 54 66 48

480 624 477 459 459 456 456 I 474 456 648 624

I

I

I I I

642 435 648 465 501 642 606 564 498 624 507 504 489 468 447 642 456 456 459 642 618

459 471 588 591 486 468 477 483

432 573 438 393 420 . 411 ; 411 432 399 600 579 597 390 609 426 462 603 570 531 468 576 471 474 432 414 402 594 408 408 387 582 573 423 423 549 549 438 414 411 435

66 68 169 70

l r

(72 73

r4

^{I I} 76

I l

(77

I

57 42 48 57 48 42

I

42 60

I

45 45 57 57 I 54 45 63

I

54 51 51 48 54 54 51

I

54 54

I

63 57

I

48 45

I

48 42 42

I

54 57 51 54 51

477 420

I

79 459 417

1so

477 429 474 417 489 441 504 462 594 552 513 453

~

82 471 426 483 438

i_

483 426 456 399

{"

468 414 636 591 495 432 480 426 98 495 444 486 435

r

100 483 435 489 435 101 480 426 486 435 102 477 423

I

477 423 654

I

⁵⁹¹

r

459 402 462 414 104 447

I

402 489 441 105 468 426 1106 477 435 492 438 l 477 420 (109 486 435

1

486 432 (113 483 432

I I I . . --- -- -- --- -- --

36

I

489 453 I 36 465 429

I

39

I

474 435 39 486 447 21 468 447

I

45

I

540 495 48 495 447 I 42 549

I

⁵

07 39

I

459 420 45 468 423 33 456 423 48 I 504 456 48

I

⁴⁸³

435 48 492 444 51 510 459 69

I

501 432 66 471 405

I

60 I 504 444 69 480 411 60

I

⁴⁸⁹

429 57 456 399 51 480 429 72

I

471 399 66 465 399 36 I

462 426 45 660 615 45 501 456 51

I

468 417 54 474 420 66 645 579 72

I

474 402 69 444 375 45

I

447

i

402 54 600 546 45 I 477

I

432 54 471 417 ~

::n I "'

c:: ;;o Cl tT1 ?"'

,_. 0\ N

Pig

I 0 " ''" ' · 1

O<"m"'l'""'·l Pig

I 0

t No. I Cycle. oestrus. No. es rus. I I I 116 I 54 447 393

1

126

I

48 11s

I

51 441 390 48 51 465 414 ~128 51 36 462 426 132 33

~ 119

36 434 408 I 33 69 528 459 -{ 135 36 63 489 426 60 60 495 435 l137 42 121 48 498 I 450

1

13s 39 66 492 426 I 42 122 48 645 ! 597 1140 42 ;

1

123 75 672 i 597 51 45 513 I 468 48 48 486 438 ~ 142 45 I 75 I

498 423 143 45 I

l'" l

⁵¹

507 456 ~ 42 57 501 444

~

145 48 I 57 I 666 609 30 57

I

⁶⁶³

606 I 48 1125 42 465 I

423

i

39 I i 45 612 567 30

TABLE VI (continued). Large Whites (continued).

Oe s tro us ~

Inter-Pig

I I

Oestrousllntcr- Cycle. oestrus. No. Oestrus. Cycle. oestrus.

I

I 462 414 1146 39 462 423 609 561 66 471 I 405 639 588 l147 I 33 471 438 417 384

r

148 ! 51 I

471 420 522 489 149 I 39 462 423 468 432 45 483 438 465 405 39 453 414 456 414 150 45 492 447 489 450 51 4l6 435 450 408

1 '"

⁴²

465 423 477 435 57

I

⁴⁹⁸

441 444 393 154 42 603 561 462 414 51 471 I 420 402 357 l155 57 459 I 402 507 462 57 516 I 459 651 609 1157 36 636 600 546 498 I 48 609 561 498 468

i

159 48 480 432 468 420

~

165 ' 39 459 420 483 444 36

I

⁵¹³

477 462 432 I I 36 477 441 I 33 657 I 624 ---

I

I ' Oestrous Inter-Pig Oestrus.

I

Cycle.) oestrus. No. 1166 I 33 510 477

I

167 I 84 522 438 45 489 444

~ 1 68

45

I

480 I

435 36 474 438 r70 36 480 444 33 405 I 372 (177 39 492

I

⁴⁵³ ~ 33 471 438

~ I SO

36 450 414 36 516 480 I 39 651 612 1182 57 510 453 39 471 432 ~ 36 462 426 1 183 57 534 477 I 51 512 461

I !

54 633 579 l 57 555 498 ---· ---

(Jl m ;x: '"0

:r:

-< (Jl

0

r 0 Cl -< 0 '"I1 -c

5

(Jl

... 0\ w TABLE VI (Continued.) The Duration (in Hours) of Oestrus and the Length of the Subsequent Oestrous Cycle and

of

Inter-oestrus. (N.B.-Litter mates are grouped.) Large Blacks. Pig

I 0

1 .

I Oo.tco"' l lotoc-

Pig

I

Oestrus.

I O estro u s ~

Inter-Pig

I O <<t m'· l 0""""' 1 lot "· ·

Pig

I

Oe trus.l Oestrous! Inter- No. es rus. Cycle. oestrus. No. Cycle. oestrus. No. Cycle. 1 oestrus. No. s Cycle. oestrus. I

I

I

I I [ 17

57 486 429 I 28 69 480 411

[~ '

60 501 441

r

57 69 546 477 18 69 498 429 I I

63 495 432 54 471 417 60 546 486 72 474 402

129

63 663 600 60 459 399 60 495 435 48 498 450 I 51 501 450 51 471 420 63 501 438 63 522 459 I 36 486 450 54 471 417

1 w

63 477 414 66 522 456 31 66 513 447

1

57 465 408 66 603 537

1

!9

69 513 444 66 492 426 60 480 420 45 480 435 81 528 447 32 48 492 444 54 519 465 45 474 429 105 549 444

~

33 54 519 465 54 594 540

~

89 57 474 417 84 540 456 66 513 447 51 504 453 57 522 465 51 471 420 69 489 420 60 504 444

{"

60 516 456 66 456 390 34 54 558 504

~

46 48 471 424 54 510 456 75 489 414 51 555 504 57 483 426 42 489 447 21 63 531 468 51 492 441

I

47 57 450 393 51 498 447 54 447 393

~ 35

48 510 462 54 501 447 60 642 582 66 477 411 60 504 444 I 60 498 438 94 66 462 396 63 468 405

L

69 480 411 ~ 48 48 492 444 f 99 75 501 426 22 51 513 462 63 471 408

I

48 483 435

r

⁷⁸

501 423 60 444 384 139 63 525 462 42 465 423 60 525 465 63 465 402

i

69 495 426

I

57 480 423 57 495 438 23 57 468 411 66 513 447 42 477 435 60 501 441 66 453 387 54 618 564

~

49 48 489 441 102 60 468 408 66 453 387

l

69 486 408 57 519 462 54 492 438 63 489 426 140 57 513 456 I 48 492 444 54 471 417 66 435 369 75 495 420 I 54 609 555 60 507 447 66 429 363 ~ 42 57 486 429 1 50 60 486 426

1

to8 69 624 555

{"

99 513 414

~45

60 471 411

I

69 495 426 36 522 486 57 I

507 450 51 549 498 60 489 429 63 540 577 51 492 441 I 63 531 468 I 51 462 411 ill 78 486 408 57 501 444

~

57 525 468 I 52 51 534 483 84 495 411 66 504 438

l

45 492 447 I 57 522 465 112 60 528 468 51 663 612 l 63 510 447 69 501 432 r6 63 522 459

1

54 42 507 465 72 492 420 54 507 453 ~ 78 540 462 60 495 435 54 474 420

l

42 510 468 I I ..... -·-·

;-< ~ o;j c: ~ C) tn ~

... 0\ +>-

-·- Pig

I

Oestr

I

Oestrous' Inter- No. us. Cycle. oestrus. I I I I

f" l

⁵⁷

540 483 54 507 453 121 57 540 483 69 504 435 I 51 504 453 69 465 396

r

123 I 60 507 447 51 549 498 54 498 444 124 54 531 477 57 642 585 125 69 525 456 69 531 462 75 489 414 63 525 462 126 54 510 456 57 510 453 72 543 471

fl28

60 534 474 51 495 444 130 51 498 447

~

131 72 492 420 51 489 438

(m

66 489 423 57 558 501

t

51

I

⁵⁰⁷

456 60 645 585

TABLE VI (continued). Large Blacks (continued). j

I

I Pig I Oestr s Oestrouslln No. u · ; Cycle. oes I

ter- trus.

f'

136 .( 137 I 138 I ( 143

j'M

145 l (147

~ 148

151

r

r53 1154

I

54 66 66 75 33 78 45 75 66 66 57 75 69 84 57 48 96 69 27 54 42 60 75 57 66 54 51 54

534 522 603 522 543 525 546 534 504 507 516 618 624 465 489 567 576 552 486 513 576 528 540 606 570

576 549 504

80 56 37 47 ⁰ 47 01 59 38 41 59 43 55 81 32 19 80 83 59 59 34 68 65 49 04 22 98 50

Pig

I

0 t I Oe.tcom,lot<t- No. es rus. Cycle. oestrus. --- 156 54

I

558 504 84 I

528 444 72 678 606 157 69 525 456 75 510 435 75 I

516 441

( :~

⁶⁶

615 549 72 I 591 519 75 549 474 48 492 444 163 48 ::61 513 72 540 468 72 531 459 60 531 471 1 164 81 597 516 ~ 166 75 546 471 66 540 474

Fb

72 516

I

444 90 522 432 75 678 603 72 489 417 72 498 426 173 81 501 420 81 516 435 78

I

504 426

l

78 510

I

432 75 510 435 w tn x.

"'

II: -< Ul

0 I "'"'"'· I """o"' l

:ot<t-

r 0 Pig C) -< No. 1 Cycle. oestrus. 0 j "!'l --

"'

H

{ 17la l

69 525 456 C) 75 537 462 Y1 176 72 549 477 69 510 441 72 513 441 1771 69 606 537 178 78 555 477 48 471 423 57 507 450 179 I 60 582 522 . I fl80 69 510 441 66 510 444

I"'

69 606 537 63 555 492 63 525 462 81 501 420 183 63 498 435 54 522 468 184 54 504 450

l'"

⁶⁰

498 438 66 513 447 54 660 606 60 528 468 60 537 477 187 66 537 471 60 496 435

165-166a 165-166b

165-166b

165-166a

167-168a 167-168b

167-168b

167-168a

J. F. BURGER.

TABLE VIII.

(Abstracted from Appendix 5, Table VII.)

Litter Size at Parturition and the Interval from Parturition to Postpartum Oestrus.

LARGE BLACKS.

Total j Partu Sow No. ! Litter I Post Size. ,oestru

I

24 ₁₃

I

²

I

4

18 4

23

I

34 4 4

45(c) 4

128 4

23

I

23 5 5

45(c) 5

89 5

92 5

129 5

18 6

41 6

13 7

17 I 7

52 I 7

131

i

⁷

136 7

12 8

23 8

45(c) 8

105 8

110 8

I 12 8

132 8

171 8

18 9

18 9

Ill 9

116 9

124 9

21 lO

22 lO

52 10

54 10

108 10

134 10

34 I 1

41 11

41 11

118 11

123 11

121 12

6(a) 13

9

I

¹⁵

11 15

12683-8

rition to

I

partum ¹ s (hours).

26 42 33 46 63 27 36 42 56 54 35 49 40 50 38 40 53 48 31 40 38 50 44

169

Sow No.

59 21 68 68 17 66 96 17 121 36 145 63 63 68 66 116 104 37 59 102 106

17(a) 101 124 64 140 23 66 438

i

i I

I I

I

LARGE WHITES.

Total Litter Size.

3 3 5 5 6 6 6 7 7 8 8 8 8 8 9 10 9 10 11 II II 12 13 14 14 14 15 15 15

i

I

Parturiti Post par Oestrus (I

39 43 53 66 44 54 43 29 33 45 90 55 67 71 56 49 36 34 38 28 9 57 48 75 30 39 46 57 46

on to tum

ours).

SEX PHYSIOLOGY OF PIGS.

TABLE IX.

Results of Services During Postpartum Oestrus.

·-· .. :

Interval Parturition Service from onset

Sow No. Date. Date. of Oestrus Boar. Result.

to Service (Hours).

Large Black.-

I

I I

23 ... 23. 4.43 24. 4.43 27

u.

20 ... Negative.

23 ... 3. 9.43 5. 9.43 24

u.

20 ... Negative.

105 ... 9. 9.43

I

^{12. 9.43 24}

^u.

^{5 ...... Negative.}

134 ... 3· 1·43 6· 1·43 36 P. 138. .. Negative.

136 ... 3. 1.43 6. 1.43 36 U. 5 ... . . Negative.

Large White.-

66 ... 5. 4.43 9. 4.43 29 P. 64 ... Negative.

68 ... 6. 7.42 10. 7.42 24 P. 64 .... Negative.

96 ... 5. 7.42 8. 7.42 24 P. 61 .. .. . ^Negative.

102 ... 5. 7.42 7. 7.42 24 P. 61. .. . Negative.

121 ... 5. 8.42 8. 8.42 36 P. 61. ' • •. Negative.

145 ... ^II. 5.43 15. 5.43 48 P. 138 .. Negative.

186 ... 7. 9.43 9. 9.43 24 P. 64 .. . .. Negative.

TABLE X.

(Abstracted from Appendix 5, Table VII.)

The Length of the Nurs-ing Period and the Interval from Weaning to Post.weaning Oestrus (Large Blacks Only).

Nursing Period (Days).

2 16 17 20 21 22 23 24 40 54 56 57 58 59 60 61 74

170

Weaning to Postweaning Oestrus (Days).

12·91 4·58 5·87 3·25 2·00 41·46 3·87 3·87 19·00 2·68 4·00 4·12 12·87 lll·02 4·50 3·96 4·96

J. F. BURGER.

TABLE XI.

Frequency Distribution of the Period from Weaning to Postweaning Oestrus.

Class Intervals (Days).

0 ... . 3 ............. . 6 ... . 9 ... . 12 ... . 15 ... . 18 ... . 21 ... . 24 ...............•......

27 ... . 30 ... . 33 ... . 36 ... . 39 ... . 42 ...................... . 45 ... . 48 ... . 51 ... . 63 ... . 84 ... . 111 ................... .

FREQUENCIES.

Large Blacks.

No.

0 16 9 2 6 3 4 1 0 1 2 0 1 0 1 0 0 1 1 1 1

Per Cent.

0 32 18 4 12 6 8 2 - 2 4 -

2 -

2

2 2 2 2 - - 50

171

I

I

Large Whites

No.

0 25 8 0 0 1 1 0 1 0 0 1 0 0 0 1 1

- - 39

Per Cent.

0 64·1 20·5

2·6 2·6 2·6

2·6

2·6 2·6

SEX PHYSIOLOGY OF PIGS.

TABLE XII.

(Abstracted from Appendix 5, Table VII.)

Sizes of Litter During the Nursing Period and the Interval from Weaning to Postweaning Oestrus.

-====--=======---=-=----_--

Sow No.

24 92 105 134 II 23 41 52 52 121 129 13 18 450 116 128 131 13 23 19 45(c) 57 111

6(a) 11 18 21 45(c) 124

12 12 17 41 41 52 108 110 123 132 9 22 34 112 118 171 9 18 18

LARGE BLACKS.

Litter Size.

I 2 2 2 3 3 3 3 3 3 3 4 4 4 4 4 4 5 5 5 5 5 5 6 6 6 6 6 6 7 7 7 7 7 7 7 7 7 7 8 8 8 8 8 8 9 10 9

Weaning to Postweaning Oestrus (Days).

19·00 63·87 15·00 4·41 3·87 18·37 2·62 5·37 3·97 5·29 4·33 2·00 3·75 4·50 17·75 50·25 14·45 4·50 12·87 2·75 11·08 5·37 27·00 3·25 3·96 4·50 5·00 11· 87 12·12 4·96 3·80 35·12 4·12 12·87 7·25 30·37 18·37 6·87 4·58 5·87 9·04 19·75 14·50 29·75 12·91 4·00 111·02 85·02

172 Sow No.

17 36 21 23 59 21 68 116 121 165 63 68 63 66 66 74 96 438 23 59 68 74 104 33 74 101 102

17(a) 32 66 106 124 140 119 64 64

LARGE WHITES.

Litter Size.

I I 3 3 3 3 4 4 4 4 5 5 6 6 6 6 6 6 7 7 7 7 7 8 8 8 8 9 9 9 9 9 9 10 10 12

Weaning to Postweaning

Oestrus (Days).

2·33 2·87 23·50 3 ·12 4·12 3·91 4·00 5·12 49·35 4·04 43·62 3·75 4·16 3·87 3·12 3·62 32·37 3·75 5·95 4·33 3·50 3·87 3·75 4·33 4·37 15·12 3·50 3·71 4·62 5·50 5·25 16·62 6·91 6·37 4·37 5·12

.1. F. BURGf'R.

TABLE XITL

(Abstracted from Appendix 5, Table VII.)

Loss of Weight of the Show During Nursing and the Interval from Weaning to Postwecming Oestrus.

Sow No.

92 45(c) 129

41 45(c) 123

19 52 104 52 108 124 131 57 121 23 18 23 17 18 128 41

45(c) Ill 118 18 I 16 22 13 9 34 52 41 21

Large Blacks.

BODY WEIGHT IN POUNDS AT

Parturition.

256 426 315 372 340 308 240 380 394 350 346 287 282 408 355 423 484 436 510 272 288 433 452 389 260 406 280 300 465 442 322 389 421 314

Weaning.

283 447 327 378 345 310 237 365 373 326 322 265 260 376 323 383 435 387 450 238 251 377 392 338 213 332 223 238 368 344 244 286 307 200

GAIN ( +) oR Loss(-)

1·--- --

_{I Actual (lb.) I Per Cent.}

--1

I

²⁷ ₂₁

I

12 6 5 2 3 15 21 24 24 22 22 32 32 40 49 49 60 34 37 56 60 56 47 74 57 62 97 98 78 103 114 114

+

10· 547

+

4·930

+

3·810

+

1·613

+

J ·471

+

0·649 J ·250 3·947 - 5·330 - 6·857 - 6·936 - 7·666 - 7·801 - 7·843 - 9·014 - 9·456 - 10·124 - 11·239 - 11·765 --12.500 - 12· 847 - 12·933 - 13·274 - 14·396 - 18·077 - 18·227 - 20·357 - 20·667 - 20·860 - 22·172 - 24·224 - 26·478 - 27 ·078 - 36· 306 --- - - -- - - - -

173

171,83-9

Weaning to Postweaning Oestrus (Days).

63·87 4·50 4·33 2·62 11·08 6·87 12·87 3·95 4·41 5·37 30·37 12·12 14·45 5·37 5·29 2·75 4·50 18·37 3·75 35 ·12 50·25 4· 12 11·87 27·00 29·75 111·02 17·75 9·04 4·50 4·00 19·75 7·25 12·87 5·00

SEX PHYSIOLOGY OF PIGS.

TAI1LE XIII (continued).

Large Whites.

· - - - -

BODY WEIGHT IN POUNDS AT GAIN (

+)

OR Loss(- ) _{Weaning to}

Sow _{- --}

- - Postweaning

No. Oestrus

Parturition. Weaning. Actual (lb.) Per Cent. (Days).

· - - - - - - ---~---- -

17 353 391 38

+

10·765 2. 33

59 472 471 I - 0·212 4·12

21 494 470 24 - 4·850 4·00

74 344 326 18 - 5·233 3·62

64 480 445 35 - 7·292 3·67

104 288 267 21 - 7·292 3·75

66 550 507 43 - 7·818 3·67

68 407 374 33 - 8·108 3·91

66 430 383 47 - 10·930 3·12

121 257 225 32 - 12·451 49·35

74 437 380 57 - 13 ·043 3·87

438 578 495 83 - 14·360 3·75

36 440 373 67 - 15·227 2·87

33 438 367 71 - 16·210 4· 33

63 544 453 91 - 16·728 4·16

66 355 292 63 - 17·746 3·87

59 402 328 74 - 18·408 4·33

102 282 229 53 - 18·794 3·50

116 280 223 57 - 20·357 5.12

106 292 232 60 - 20·548 5·25

23 469 358 Ill - 23.667 5·95

68 490 365 125 - 25·510 3·75

119 325 238 87 - 26·769 4·37

74 400 291 109 - 27·250 4·37

.124 303 220 83 - 27· 393 16·62

140 326 234 92 - 28·221 6·91

17(a) 449 319 130 - 28·953 3·71

68 461 327 134 - 29·067 3·50

101 334 235 99 - 29·641 15 ·12

66 405 272 133 - 32·840 5·50

64 332 216 116 - 34·940 6· 37

64 427 274 153 - 35 ·831 5·12

63 554 349 205 - 37·004 43·62

17 468 257 211 - 45·085

- - - - -

174

175-176a

SEX PHYSIOLOGY OF PIGSJ.F. BURGER b

J. F. BURGER.

TABLE XVI.

The Influence of the Absence of Coitus and of Sterile and Fertile Coitus at Zero Hour on the Duration of Oestrus (in Hours).

..

LARGE BLACKS. LARGE WHITES.

Sow No. ^I -

I

Sow No.

Absence

I I

Absence

I

^{Sterile Fertile Sterile Fertile.}

of Coitus. Coitus Coitus. of Coitus. Coitus. Coitus.

I

I

I I

I

44U 60 63 - 140 51 48 I ³⁹

42 57 60 - 143 45 42 48

154 54 51 - 68 45 - 42

143 42 75 78 123 45 51 -

138 69 66 - 96 48 51 45

57 75 66 - 74 48 39 -

134 54 66 54 69 57 45 -

18 63 84 ^- 128 69

I

51 -

116 57 - 66 72 54 - 60

41 72 - 66 134 33 - 42

126 54 - 48 132 33 I ^{- 33}

121 57 - 66 147 33 ^- 36

105 54 51 66 124 57 ^- 63

I

87 57 - 45 149 45

I

- 39

92 42 ^- 90 116 54 ^- 48

147 27 - 54 148 51 - 39

123 60 - 48 154 42 - 45

124 54 ^- 42 102 51 - 63

151 60 - 66 100 60 -

I

⁶⁰

180 69 63 - 109 45 - 54

215 81 57 - 184 30 42

I

-

- - ^- - 188

I ⁴⁵

I

^{36 -}

- - - ^- 190 27 30 -

APPENDIX 6.

OBSERVATION 5.

The Optimum Service Period: Macroscopic Examin(l{ion of the Ovaries and Embryos at A bout Twenty-six Days of Pregnancy.

This appendix is devoted to a description of the morphological appearances of the ovaries and embryos of the sow at about 26 days of pregnancy. Ten sows from each of the Large Black and Large White breeds were mated at twelve-hour intervals, starting at the zero hour of oestrus. Five such interval groups were obtained for the Large Black breed, but the sixth group in this breed includes only eight individuals, as it was not possible to obtain the full quota of ten pregnancies for the 60th hour of oestrus. In the Large White breed only four interval groups could be established.

Certain particulars, some of which are not included in the discussions below. are presented in tables of this appendix. For purposes of brevity and economy of space, the following abbreviations have been used: C. L. Gr. for Corpora Lutea Gravitatis; l.o. for left ovary and r.o. for right ovary.

Large Blacks.

(Groups 1 to 6).

Group I. Sows Served at Zero Hour of Oestms.

(1) Sow No. 52.- 0estrus on 29.12.42, 3 p.m.; duration of oestrus 63 hours;

slaughtered 25.1.43; pregnancy 27 day~.

C.L.Gr.: l.o. 9, r.o. 5; diameters 9- 11 mm. Their general shape is spherical but some are conically inclined. Blood vessels show very distinctly over all their surfaces. The

177

12683-11