The effects of milk feeding on the pre- and post-weaning growth of calves, and on stomach development at weaning

Kaiser, AG

doi:10.1017/s0021859600027659

Cited by 14 publications

(7 citation statements)

References 4 publications

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“…A higher development of the rumen, reticulum, omasum, abomasum and small intestine was found in lambs fed with their mothers milk compared with those fed with milk replacers (p < 0.05). This results seems to support the idea of a higher rumen functionality of lambs when fed under natural conditions (K aiser 1976).…”

Section: Resultssupporting

confidence: 87%

Effect of rearing system on growth, body composition and development of digestive system in young lambs

Fuente

Tejón

Rey

et al. 1997

Animal Physiology Nutrition

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Summary In the present work the carcass composition and fatty acid composition of the fat deposits of young Colmenarcña and Rubia del Molar male lambs fed with natural milk and with commercial milk replacer were studied. The daily gain during the late phase of feeding (15‐30 days) was higher in the animals that were reared artificially than in those fed by their mothers (310 versus 245 g/day, p < 0.001). Carcass characteristics and dissected shoulder tissues were not markedly affected by dietary treatment. Lambs receiving sheep milk had higher concentration of C15: 0, C17: 0 and total saturated fatty acids than groups receiving milk replacer (p = 0.001). A higher rumen, reticulum, omasum, abomasum and small intestine development was also found in lambs fed by their mothers compared with those fed milk replacers (p < 0.05). The results from this experiment suggest that lambs artificially reared have a lower rumen functionality and might be slaughtered at higher weights without a concomitant loss of meat quality. Zusammenfassung Einfluß des Tränksystems auf Wachstum, Körperzusammensetzung und Entwicklung des Verdauungskanals bei Lämmern Je 10 neugeborene Lämmer der Rassen Colmenareña und Rubia del Molar konnten über 30 Tage entweder an ihrer Mutter saugen oder sie wurden mit einem Milchaustauscher ernährt. Die Anfangsgewichte betrugen im Mittel 3,4 kg, die Endgewichte 10,5 kg/Lamm. Im Versuchsabschnitt vom 15.–30. Tag betrugen die Tageszunahmen der an der Mutter saugenden Lämmer 245 g und die der mit Milchaustauscher ernährten Tiere 310 g (p < 0.001). Die Körperzusammensetzung war durch die Tränke nicht signifikant beeinflußt. Die mit Muttermilch ernährten Lämmer wiesen höhere Konzentrationen an C15:0, C17:0 und insgesamt an gesättigten Fettsäuren auf als bei Einsatz von Milchaustauschern. Die saugenden Lämmer wiesen ein höheres Gewicht des vollen Magen‐Darmtraktes auf (1599 bzw. 1265 g). Auch die Leergewichte von Pansen, Reticulum, Omasum, Abomasum und Dünndarm waren bei den an der Mutter saugenden Lämmern signifikant höher als bei den mit Milchaustauschern ernährten Tieren. Infolge der geringen Pansenentwicklung wird geschlußfolgert, daß die mit Milchaustauschern ernährten Lämmer ohne Beeinflussung der Fleischqualität mit einem höheren Gewicht geschlachtet werden können.

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Section: Resultssupporting

confidence: 87%

Effect of rearing system on growth, body composition and development of digestive system in young lambs

Fuente

Tejón

Rey

et al. 1997

Animal Physiology Nutrition

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“…These regression coefficients were very similar to that between growth and milk consumption during 12 weeks for calves on pasture that were hand fed whole milk (Kaiser, 1976). It accounted for 0-82 of the between-class and 0-62 of the within-class variation in weight gain to 98 days.…”

Section: Concentrates and Weaned Calf Productionsupporting

confidence: 64%

Analysis of some factors which affect the productivity of beef cows and of their calves in a marginal rainfall area of Rhodesia 3. Factors affecting calf birth weight, growth to 240 days and use of concentrates by cows and their calves

Richardson¹,

Oliver

Clarke

1979

Anim. Prod.

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The birth weight and growth rate of sucking calves reared by three groups of cows grazing on veld and receiving different amounts of concentrates during winter and the first 8 weeks of lactation were studied over four successive calving seasons. Calves were weaned at either 150 or 240 days. The efficiency of use of concentrates for weaned calf production was calculated.Calves from cows given most concentrates were heavier (P<0·01) than othei calves at birth, 150 days and 240 days. Milk consumption during the first 98 days of life accounted for most of the variation in pre-weaning growth. Time of weaning had little effect (P<0·05) on birth weight of the next year's calf and although cows in the early- weaning groups produced calves which were the heaviest at 150 days (P>0·05) these calves weighed less than other calves at 240 days (P<0·001). Simple and multiple regression analyses were used to show that birth weight was affected significantly by cow-weight change during winter and these differences were in part independent of treatment and year. Calf birth weight increased as age of dam increased but this was due to increase in weight of cow with age. Within classes, calf birth weight had a significant and positive effect on weight gain after accounting for milk consumption and this was shown to be an effect of sex. Cows given concentrates produced more weight of 240-days-old weaned calf per year than those given none (P<0·01), and late weaning led to the production of more weaned calf per annum than early weaning (P< 0·001) even when allowance was made for differences in concentrate consumption.

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“…Discussion Growth rate was not affected by health problems. Early-weaned calves or lambs often show a transient decrease of the growth rate explained by incomplete development of rumen size and function and therefore inability to digest solid feeds sufficiently, often followed by negative nitrogen balances (KAISER, 1976;Roy, 1980;QUIGLEY et al, 1985;TOUUEC et al, 1992;FUNABA et al, 1994). However, a postweaning lagin body growth was not seen in our breeding calves, likely because they were weaned slowly up to 16 weeks, i.…”

Section: Concmtrajions 0/metabolites Hormones Haemoglobin Andironmentioning

confidence: 88%

Changes of Blood Metabolites and Hormones in Breeding Calves associated with Weaning

Hugi

Blum

1997

Journal of Veterinary Medicine Series A

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Summary Changes of blood metabolites and hormones were studied in female breeding calves before, during and after weaning from 4 to 18 weeks of age. Calves were initially fed increasing amounts of whole milk (up to 7 kg/day in week 8 of life). Milk intake was then gradually decreased up to the age of 16 weeks, when calves were completely weaned and only fed hay and concentrates. Average daily gain was 0.85 kg. Postprandial concentrations of glucose, insulin, insulin‐like growth factor‐I and 3.5.3′‐triiodothyronine concentrations gradually decreased (P < 0.05) with age, while those of β‐hydroxybutyrate, protein, albumin, haemoglobin and iron increased (P < 0.05). Concentrations of cholesterol transiently increased, whereas those of urea reversibly decreased. Non‐esterified fatty acids, triglycerides and growth hormone did not consistently change during the duration of the study. In conclusion, changes of glucose, β‐hydroxybutyrate, haemoglobin, iron, insulin, insulin‐like growth factor‐I and 3.5.3′‐triiodothyronine were markedly different from those usually seen in veal calves of the same age.

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The effects of milk feeding on the pre- and post-weaning growth of calves, and on stomach development at weaning

Cited by 14 publications

References 4 publications

Effect of rearing system on growth, body composition and development of digestive system in young lambs

Effect of rearing system on growth, body composition and development of digestive system in young lambs

Analysis of some factors which affect the productivity of beef cows and of their calves in a marginal rainfall area of Rhodesia 3. Factors affecting calf birth weight, growth to 240 days and use of concentrates by cows and their calves

Changes of Blood Metabolites and Hormones in Breeding Calves associated with Weaning

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