Insecticide Residues in Milk, Residues in Milk from Dairy Cows Fed Low Levels of Toxaphene in Their Daily Ration

1963 ◽  
Vol 11 (1) ◽  
pp. 70-72 ◽  
Author(s):  
Gunter Zweig ◽  
Earl Pye ◽  
Ranjit Sitlani ◽  
S Peoples
Keyword(s):  
Dairy Cows ◽  
Daily Ration ◽  
Insecticide Residues ◽  
Low Levels

Insecticide Residues in Milk, DDT Residues in Milk from Dairy Cows Fed Low Levels of DDT in Their Daily Rations

1961 ◽  
Vol 9 (6) ◽  
pp. 481-484 ◽  
Author(s):  
Gunter Zwieg ◽  
L. M. Smith ◽  
S. A. Peoples ◽  
R. Cox
Keyword(s):  
Dairy Cows ◽  
Insecticide Residues ◽  
Low Levels

Insecticide Residues in Milk, Effects of Feeding Low Levels of Heptachlor Epoxide to Dairy Cows on Residues and Off-Flavors in Milk

1960 ◽  
Vol 8 (5) ◽  
pp. 408-409 ◽  
Author(s):  
C. A. Bache ◽  
G. G. Gyrisco ◽  
S. N. Fertig ◽  
E. W. Huddleston ◽  
D. J. Lisk ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Heptachlor Epoxide ◽  
Insecticide Residues ◽  
Off Flavors ◽  
Low Levels

Wartime changes in the winter diet of dairy cows in the Eastern Counties of England

1946 ◽  
Vol 36 (3) ◽  
pp. 222-225
Author(s):  
G. H. N. Pettit
Keyword(s):  
Organic Matter ◽  
Sugar Beet ◽  
Dairy Cows ◽  
Dry Matter ◽  
Daily Ration ◽  
Important Place ◽  
Modest Increase ◽  
Winter Diet ◽  
Digestible Organic Matter ◽  
Wheat Products

The general characteristics of a group of thirtynine herds of dairy cows in the Eastern Counties of England, and the method of obtaining information about their diet during the winters 1938–9 to 1942–3 inclusive, are briefly described.The first three winters of the war show a continuous decline in starch equivalent and protein equivalent per cow, followed by a recovery during winter 1942–3.Comparing winter 1942–3 with winter 1938–9: Consumption per cow of concentrates declined by one-third, reductions in proprietary compounds and mixtures and in maize and wheat products being outstanding.The more important increases were in oats, straw and succulent foods, notably mangolds, sugar-beet tops and kale.Hay retained its important place with little overall change; a modest increase in silage was restricted to a few herds.The crude weight of the average daily ration increased from 44 to 61 lb., but its dry matter only from 21·0 to 22·6 lb.The residue: total dry matter less digestible organic matter—increased from 7·2 to 8·4 lb. per cow daily. Reference is made to changes in palatability.

Effect of restricted food intake, before and/or after mating, on the reproductive performance of Greyface ewes

1989 ◽  
Vol 48 (1) ◽  
pp. 149-155 ◽  
Author(s):  
S. M. Rhind ◽  
W. A. C. McKelvey ◽  
S. McMillen ◽  
R. G. Gunn ◽  
D. A. Eiston
Keyword(s):  
Food Intake ◽  
Reproductive Performance ◽  
Live Weight ◽  
Experimental Period ◽  
Metabolizable Energy ◽  
Ovulation Rate ◽  
Daily Ration ◽  
The Mean ◽  
Low Levels ◽  
Lambing Rate

ABSTRACTThe effect on the reproductive performance of Greyface (Border Leicester × Scottish Blackface) ewes of a low level food intake and associated loss of live weight from either 14 days before mating, or from the time of mating, until 11 to 26 days after mating, was investigated. Ewes (252) were allocated to one of three treatments with ewes within each treatment divided into two flocks (flock A: 16 ewes per treatment; flock B: 68 ewes per treatment). Ewes of treatment LL were given a ration providing proportionately 0·5 estimated metabolizable energy (ME) requirements for maintenance from 2 weeks before mating. Those of treatment HL were given a daily ration providing 1·5 estimated ME requirements for maintenance until mating and the restricted ration thereafter. Ewes of treatment HH were given the higher ration throughout the experimental period. Flock A ewes were slaughtered at 11 days post mating and flock B ewes at between 18 and 26 days post mating. Treatment differences in the ovulation rates of flock A ewes were not statistically significant but in flock B, ewes of treatment LL had a lower mean ovulation rate (1·81) than those of treatments HL (2·23) and HH (2·09) (P < 0·001). The lower ovulation rate of LL ewes relative to HL ewes in flock B was reflected in a lower mean potential lambing rate per ewe pregnant than in the HL treatment (1·58 v. 1·79; P < 0·01) and per ewe put to the ram (1·37 v. 1·65; P < 0·01). HL ewes had a slightly lower mean potential lambing rate per ewe pregnant (1·79 v. 1·97; P < 01) and per ewe put to the ram (1·65 v. 1·82; P < 0·05) than HH ewes. Ova wastage rates of LL + HL and HH ewes were 0·26 and 014 (P < 001) respectively at 24 days post mating. Values for LL and HL ewes (0·27 and 0·25 respectively) were not significantly different.Estimated mean conceptus lengths were 370, 500 and 1400 μin for LL, HL and HH ewes respectively (P < 0·05).It is concluded that low food intake before mating reduced the mean ovulation rate and low intakes after mating compromised embryo growth rate and induced a higher rate of ova wastage; this increase in the incidence of ova wastage was not significantly exacerbated by the low levels of intake prior to mating.

Insecticide Residues in Milk, Effects of Feeding Low Levels of Insecticide Residues on Hay to Dairy Cattle on Flavor and Residues in Milk

1959 ◽  
Vol 7 (10) ◽  
pp. 707-711 ◽  
Author(s):  
G. G. Gyrisco ◽  
L. B. Norton ◽  
G. W. Trimberger ◽  
R. F. Holland ◽  
P. J. McEnerney ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Insecticide Residues ◽  
Low Levels

scholarly journals Insecticide Residues in the Milk of Dairy Cows Treated for Control of Ectoparasites

1968 ◽  
Vol 51 (7) ◽  
pp. 1023-1025 ◽  
Author(s):  
Nasri S. Kawar ◽  
Noubar J. Bostanian ◽  
Samir M. Badawi
Keyword(s):  
Dairy Cows ◽  
Insecticide Residues

scholarly journals A Study of Feeding Low Levels of Thyroprotein to Dairy Cows for a Period of Fifty-Two Weeks

1949 ◽  
Vol 32 (3) ◽  
pp. 257-264 ◽  
Author(s):  
R.G. Swanson ◽  
C.B. Knodt
Keyword(s):  
Dairy Cows ◽  
Low Levels
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