A Study of the Effect of Stilbestrol Induced Lactation on Dairy Goats

Eaton, Orson N.; Simmons, V. L.; Sykes, J. F.; Wrenn, T.R.; Hall, Samuel

doi:10.3168/jds.s0022-0302(53)91602-6

Cited by 4 publications

(4 citation statements)

References 7 publications

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“…Naito, Yokoyama, Yoshioka, Yokoyama & Yokotsuka (1953) reported that normal dairy performance in goatlings could be predicted from the results of inducing lactation by treatment with synthetic oestrogen. Eaton, Simmons, Sykes, Wrenn & Hall (1953) and Goto & Oshima (1955) have also reported similar results with slight variation in methods. The economic importance of such a predictive test would be greater with cows than with goats, and therefore the authors have applied this technique to heifers to find whether similar results to those with goats may be obtained.…”

Section: Introductionmentioning

confidence: 52%

“…Even in the well-developed gland, alveoli are larger in cross-section than normal and have elongated and tongue-shaped cells, as has been shown for goats (Cowie et al 1952;Naito, Yokoyama, Yoshioka, Ide & Yokoyama, 1952;Naito et al 1953). Further, the milk yield in goats (Lewis & Turner, 1941, 1942aMixner & Turner, 1943;Mixner, Meites & Turner, 1944;Naito et al 1952Naito et al , 1953Eaton et al 1953;Goto & Oshima, 1955;Benson et al 1955) and in cows (Day & Hammond, 1945;Sykes & Wrenn, 1951;Naito et al 1955Naito et al , 1960Naito et al , 1962 is less than normal.…”

Section: Methods Of Testingmentioning

confidence: 91%

“…The possibility of predicting normal dairy performance from the milk records in the induced lactation has been reported for goats (Eaton et al 1953;Naito et al 1953;Goto & Oshima, 1955). The present results show a similar possibility in cows.…”

Section: Possibility Of Predicting Normal Dairy Performances From Thementioning

confidence: 99%

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The prediction of dairy performance of cows from the lactation induced by treatment with oestrogen

Naito

Kano

Okubo³

et al. 1968

Journal of Dairy Research

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Lactation was induced in 30 Holstein heifers by treatment with synthetic oestrogen only. The average age of the heifers at the start of treatment was 16-6 months and the average lactation yield 1072 kg of milk with a fat content of 3-43 % given in 241 days. Subsequently, 22 of these animals gave a normal lactation starting at an average age of 31 months, with yields of 3980 kg milk with a fat content of 3-31 % given in 294 days. The induced lactation was slightly associated with reproductive problems and growth of the animals was normal. There was a good within-cow correlation between the yield and composition of the milk obtained in the 2 lactations. The correlation coefficients between the total production of the milk in the normal lactation and the total yield and peak production in the induced lactation were 0-718 and 0-785 and that between the average percentages of fat in the milk obtained in the 2 lactations was 0-718.It is possible to predict dairy performance from the performance during the induced lactation, but before the procedure can be recommended for general use the question whether it may induce reproductive difficulties requires further investigation.

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