Digestibility and Rate of Passage by Steers Fed Tall Fescue, Alfalfa and Orchardgrass Hay in 18 and 32 C Ambient Temperatures1

Warren, W. P.; Martz, F.A.; Asay, K. H.; Hilderbrand, E. S.; Payne, C. G.; Vogt, J.R.

doi:10.2527/jas1974.39193x

Cited by 70 publications

(30 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…(Fuller and Cadenhead 1969). Blaxter and Wainman (1961) The changes in fiber digestibility with temperature described in the present study and that of Warren et al (1974) Young (1912Young ( ,1973 …”

supporting

confidence: 57%

Effects of Prolonged Cold and the Outdoor Winter Environment on Apparent Digestibility in Sheep and Cattle

Christopherson¹

1976

Can. J. Anim. Sci.

View full text Add to dashboard Cite

supporting

confidence: 57%

Effects of Prolonged Cold and the Outdoor Winter Environment on Apparent Digestibility in Sheep and Cattle

Christopherson¹

1976

Can. J. Anim. Sci.

View full text Add to dashboard Cite

“…In the experiments of Attebery and Johnson (1969) and Miaron and Christopherson (1992), heat-stressed cattle showed decreased rumen motility and lower passage rates. Warren et al (1974) and Lippke (1975) observed increased mean retention times of forage and increased digestibility of structural carbohydrates in the rumen of heatstressed steers. The production of SCFA decreased in most experiments with decreased acetate and increased propionate molar percentages (Kelley et al, 1967;Gengler et al, 1970;Tajima et al, 2007).…”

Section: Effects Of Climate Change On Ruminal Fermentation and Structmentioning

confidence: 92%

Future consequences and challenges for dairy cow production systems arising from climate change in Central Europe – a review

Gauly

Bollwein

Breves

et al. 2013

Animal

155

100

View full text Add to dashboard Cite

It is well documented that global warming is unequivocal. Dairy production systems are considered as important sources of greenhouse gas emissions; however, little is known about the sensitivity and vulnerability of these production systems themselves to climate warming. This review brings different aspects of dairy cow production in Central Europe into focus, with a holistic approach to emphasize potential future consequences and challenges arising from climate change. With the current understanding of the effects of climate change, it is expected that yield of forage per hectare will be influenced positively, whereas quality will mainly depend on water availability and soil characteristics. Thus, the botanical composition of future grassland should include species that are able to withstand the changing conditions (e.g. lucerne and bird's foot trefoil). Changes in nutrient concentration of forage plants, elevated heat loads and altered feeding patterns of animals may influence rumen physiology. Several promising nutritional strategies are available to lower potential negative impacts of climate change on dairy cow nutrition and performance. Adjustment of feeding and drinking regimes, diet composition and additive supplementation can contribute to the maintenance of adequate dairy cow nutrition and performance. Provision of adequate shade and cooling will reduce the direct effects of heat stress. As estimated genetic parameters are promising, heat stress tolerance as a functional trait may be included into breeding programmes. Indirect effects of global warming on the health and welfare of animals seem to be more complicated and thus are less predictable. As the epidemiology of certain gastrointestinal nematodes and liver fluke is favourably influenced by increased temperature and humidity, relations between climate change and disease dynamics should be followed closely. Under current conditions, climate change associated economic impacts are estimated to be neutral if some form of adaptation is integrated. Therefore, it is essential to establish and adopt mitigation strategies covering available tools from management, nutrition, health and plant and animal breeding to cope with the future consequences of climate change on dairy farming.Keywords: global warming, cow comfort, heat stress, heat tolerance, functional traits ImplicationsAs a consequence of global warming, drier and hotter summers are expected for Central Europe. Here we discuss multiple interactions between climate change and dairy production in Central Europe in its full complexity, starting from fodder resources to breeding impacts and farm economy. Under current conditions, the impact of climate change on the farm economy is estimated to be neutral if some form of adaptation is integrated. Thus, establishing mitigation and adaptation strategies covering available tools from management, nutrition, health and plant and animal breeding to cope with the future consequences of climate change on dairy farming are essential.-E-mail: Mgauly@gwdg.de 843 ...

show abstract

“…The effects of thermal stress on MATERIALS AND METHODS the digestive system has been attributed Animals, Management and Experimental Design mainly to a reduced retention time of partic-The experimental animals were six steers (1/3 ulate digesta in the ruminoreticulum in issoci-Angus x l/3 Charolais x l/3 Galloway) from a ation with a rapid turnover of fluid markers strain selected for small mature size, bred at the and increased motitity during cold exposur" ,t#lililtilri,i,"ijtffll;,Tfi_'JTJi;J.:t#f; in-sheep (Kennedy et al 1916; Westra and with rumen cannulae (10_cm diameter). The Christopherson 1976; Kennedy and Milligan animals were siven a minimum of 3 wk to recover 1978); for cattle, less information is available from surgery' and then were transferred into (Christopherson 1976;Warren et al 1974). individual metabolism crates, where they underAlthoughtheincreaseddigestibiliryof organic went acclimation for digestion and metabolism matter by cattle in a warm environment was experlments.…”

mentioning

confidence: 99%

Effect of prolonged thermal exposure on heat production, reticular motility, rumen-fluid and -particulate passage-rate constants, and apparent digestibility in steers

Miaron¹,

Christopherson²

1992

Can. J. Anim. Sci.

View full text Add to dashboard Cite

. 1992. Effect of prolonged thermal exposure on heat production, reticular motility, fumen-fluid and -particulate passage-rate constants, and apparent digestibility in steers. Can. J. Anim. . Six steers fitted with permanent rumen cannulae and fed alfalfa-grass hay were kept at either -10, l0 or 28"C for 21 d to evaluate the effects ofprolonged thermal exposue on heat production (HP) and digestive responses. HP was lowest at 28'C and increased significantiy (P < 0.05) as the ternperature was reduced to -10'C. The duration of the biphasic reticular contraction during resting was significantly (P < 0.05) reduced at -10'C (5.4 s) compared with that at 10"C (5.7 s) and 28"C (5.7 s) whereas duration and amplitude of biphasic reticular contractions during rumination were elevated at -10'C (P < 0.05). Apparent digestibilities of dry matter, orga4c matter, neutral detergent fibre and crude protein on average were 17% (range 9-16%) higher (P < 0'05) at 28 than at 10'C. The particulate passage-rate constant was higher at -10"C (P < 0.05) than at 10 and 28"C (0.046 vs. 0.038 and 0.034, respectively). The fluid passage-rate constant showed a quadratic response to temperature and was inversely related to digestibility. This study suggests prolong6e ir un regime thermique sur la production calorifique et sur la digestion. La production calorifique 6tait au plus bas d 28"C et augmentait significativement (P < 005) ir mesure que les temperatures descendaient jusqu'd -10"C. La dur6e de la contraction r6ticulaire biphas6e au repos 6tait significativement (P < 005) raccourcie d -10"C (5,4 s) par rapport )r 10 et d 28'C (5,7 s), mais durant la rumination elle 6tait significativement plus 6lev6e (P < 0,05) ir -10"C. La digestibilit6 apparente de la matidre sdche, de la matidre organique, des fibres au d6tergent neutre et des prot6ines brutes 6tait en moyenne ll% (6,cart 9{6) plus forle (P < 0,05) ir 28'C qu'h 10'C. La constante de transit des particules solides (par heure) 6tait plus haute d -10'C (P < 0,05) qu'd 10 et 28"C (0,046 contre 0038 et 0,034 respectivement). La constante de transit des liquides montrait une r6ponse quadratique ir la temp6rature et 6tait inversement reli6e ir la digestibilit6. L6tude porte d penser que les temp6ratures d'ambiance influent non seulement sur la cin6tique des matibres solides et des liquides mais 6galement sur la forme et sur la p6riodicit6 des contractions r6ticulaires. En outre, les modihcations thermo-induites de la dur6e et de l'amplitude des contractions r6ticulaires durant la rumination, par rapport d la phase, de repos 6taient associ6es ir des modifications des constantes du taux de transit des matibres solides.

show abstract

Digestibility and Rate of Passage by Steers Fed Tall Fescue, Alfalfa and Orchardgrass Hay in 18 and 32 C Ambient Temperatures1

Cited by 70 publications

References 14 publications

Effects of Prolonged Cold and the Outdoor Winter Environment on Apparent Digestibility in Sheep and Cattle

Effects of Prolonged Cold and the Outdoor Winter Environment on Apparent Digestibility in Sheep and Cattle

Future consequences and challenges for dairy cow production systems arising from climate change in Central Europe – a review

Effect of prolonged thermal exposure on heat production, reticular motility, rumen-fluid and -particulate passage-rate constants, and apparent digestibility in steers

Contact Info

Product

Resources

About