Chewing Activity, Saliva Production, and Ruminal pH of Primiparous and Multiparous Lactating Dairy Cows

Maekawa, Mayumi; Beauchemin, K. A.; Christensen, David A.

doi:10.3168/jds.s0022-0302(02)74180-5

Cited by 125 publications

(96 citation statements)

References 17 publications

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“…However, they observed multiparous cows to show a longer total time spent feeding per day than primiparous cows (260 vs. 213 min d −1 ). Maekawa et al (2002) also found longer feeding periods (47 min d −1 ) in multiparous cows when compared to primiparous cows. However, according to Ulbrich et al (2004), older cows have a higher velocity of feed intake when compared to heifers.…”

Section: Discussionmentioning

confidence: 67%

Investigations on automatically measured feed intake amount in dairy cows during the oestrus period

Halli

Koch²,

Romberg

et al. 2015

Arch. Anim. Breed.

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Abstract. The aim of this study was to determine whether feed intake amount and feed intake behaviour could be related to oestrus in dairy cows. Furthermore, we investigated whether oestrus had an effect on daily milk yield. A total of 138 oestrus cycles, leading to conception of 100 cows, were analysed. The parameters "daily fresh matter intake amount (kg)", "daily number of visits to the feeding trough" and "time spent feeding per day (min)" were electronically measured and recorded. For a sub-quantity of all animals, daily milk yield (kg) was recorded continuously and stored in the herd management software. Special attention was given to the day of oestrus, which was defined as the day of successful insemination. All remaining days of the oestrus cycle were considered as the reference period. Among all animals and cycles, fresh matter intake amount per day, number of visits per day, and time spent feeding per day were reduced by 10.3, 9.1 and 20.8 %, respectively, on the day of oestrus. Fresh matter intake was significantly lower in primiparous cows than in multiparous cows. However, number of visits to the trough and time spent feeding per day were significantly higher in primiparous cows compared to multiparous cows. Day of oestrus did not have a significant effect on daily milk yield, as this parameter was characterized by high variation among all days of the oestrus cycle. In conclusion, if an RIC system is used, monitoring of feeding behaviour appears to be a potential auxiliary aid in oestrus detection.

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Section: Discussionmentioning

confidence: 67%

Investigations on automatically measured feed intake amount in dairy cows during the oestrus period

Halli

Koch²,

Romberg

et al. 2015

Arch. Anim. Breed.

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“…Durante a noite, as luzes das instalações foram mantidas apagadas, usando-se lanterna para as observações. Foram avaliados os comportamentos de ingestão de alimento e de água, ruminação ou ócio (Maekawa et al, 2002). Os cálculos das atividades foram feitos em minutos por dia, assumindo que, nos cinco minutos seguintes a cada observação, o animal permaneceu na mesma atividade.…”

Section: Methodsunclassified

“…Os cálculos das atividades foram feitos em minutos por dia, assumindo que, nos cinco minutos seguintes a cada observação, o animal permaneceu na mesma atividade. O tempo total de mastigação foi determinado somando-se os tempos de ingestão de alimento e ruminação (Maekawa et al, 2002).…”

Section: Methodsunclassified

Aditivos químicos e biológicos na ensilagem de cana-de-açúcar: 1. composição química das silagens, ingestão, digestibilidade e comportamento ingestivo

et al. 2007

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RESUMO -Avaliou-se o efeito da inclusão de aditivos na ensilagem de cana-de-açúcar (Saccharum officinarum L.) sobre a composição químico-bromatológica das silagens, o comportamento ingestivo, o consumo voluntário e a digestibilidade em bovinos de corte. Utilizaram-se cinco novilhos da raça Nelore providos de cânula ruminal, alocados em delineamento quadrado latino 5 × 5 e alimentados com dietas com 65% de volumoso na MS. Foram avaliadas cinco silagens (base úmida):controle -cana-de-açúcar sem aditivos; uréia -cana-de-açúcar + 0,5% uréia; benzoato -cana-de-açúcar + 0,1% de benzoato de sódio; LP -cana-de-açúcar inoculada com Lactobacillus plantarum (1 × 10 6 ufc/g MV); LB -cana-de-açúcar inoculada com L. buchneri (3,6 × 10 5 ufc/g forragem). A forragem foi armazenada em silos do tipo poço por 90 dias antes do fornecimento aos animais. A composição químico-bromatológica da cana-de-açúcar foi alterada após a ensilagem, em relação à cana-de-açúcar original, com redução no teor de carboidratos solúveis e na digestibilidade in vitro e elevação relativa nos teores de FDN e FDA. Os teores de etanol (0,30% da MS) e ácidos orgânicos (0,99% de ácido lático e 2,31% de acético)foram baixos e semelhantes entre as silagens. Os aditivos aplicados na ensilagem não promoveram alterações no consumo e na digestibilidade aparente da MS (7,2 kg/dia e 63,6%, respectivamente). O comportamento ingestivo dos animais também não foi alterado, com tempos médios de 230,6; 519,6 e 672,8 minutos/dia despendidos com ingestão de ração, ruminação e ócio, respectivamente. Os aditivos acrescidos à cana-de-açúcar promoveram pequenas alterações na maioria das variáveis avaliadas.Palavras-chave: ácido lático, benzoato de sódio, etanol, Lactobacillus buchneri, Lactobacillus plantarum, uréia Chemical and biological additives in the ensiling of sugar cane. 1. Chemical composition, dry matter intake, digestibility and ingestive behavior ABSTRACT -The effect of the addition of additives in the ensiling of sugar cane (Saccharum officinarum L.) on chemical composition of silages, ingestive behavior, voluntary feed intake and digestibility by beef steers. Five rumencannulated Nelore steers were allotted to a 5 x 5 latin square design. The steers were placed in metabolic cages and they were fed with diets with 65% forage (%DM). Five silages were evaluated (wet basis): Control -sugar cane, no additives; Urea -sugar cane + 0.5% of urea; Benzoate -sugar cane + 0.1% of sodium benzoate; LP -sugar cane inoculated with -Lactobacillus plantarum (1 x 10 6 cfu/g forage); LB -sugar cane inoculated with L. buchneri (3.6 x 10 5 cfu/g forage). During 90 days, before the animal feeding, the forage was stocked in vertical silos. The chemical composition of sugar cane changed after the ensiling, as compared to fresh sugar cane, with reduction of water soluble carbohydrates and in vitro digestibility and relative increase in the NDF and ADF content. Ethanol (0.30% DM) and organic acids (0.99% of lactic and 2.31% of acetic acid) contents were low and similar among silages. The ad...

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“…This finding implie s the existence of a substantial exchange of information between rumen and oral cavity. On the basis of some 200-250 liters/day of saliva production by dairy cows (Maekawa et al, 2002), 80-100 x 10 6 ACCEPTED MANUSCRIPT…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Innate immune responses to metabolic stress can be detected in rumen fluids

Trevisi

Riva

Filipe

et al. 2018

Research in Veterinary Science

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Many production diseases of dairy cows are related to digestive troubles. The rumen subacute acidosis is the most relevant one, albeit not easily recognized. Recent studies suggest that forestomachs can perform regulatory actions at both regional and systemic levels, since forestomach walls express immune receptors and cytokines, and the rumen liquor is infiltrated by leukocytes. Therefore, the rumen fluid could be conveniently collected for investigating metabolic production diseases. Thus, we investigated the origin of the leukocytes of the rumen fluid and demonstrated that they partly derive from saliva. Next, we carried out a field survey of innate immunity in rumen fluids of 128 cows from 12 dairy farms, along with clinical inspections, assessment of milk yield, rumen pH, volatile fatty acids (VFA) and major inflammo-metabolic parameters. Significant statistical correlations were found between immune markers in rumen fluids and biochemical parameters. A significant negative correlation was found in rumen between CD45 gene expression (leukocyte infiltration) and pH level. B cells were the most frequent mononuclear leukocyte population in the rumen liquor and their infiltration was negatively affected by low ruminal pH and high concentrations of VFA. Moreover, total Ig and IgM in rumen fluids were negatively correlated with ruminal pH and positively correlated with uremia.Our data suggest that forestomach immune responses could be directed to "dangers" arising within the forestomach environment. The immune markers could integrate consolidated diagnostic parameters (e.g. rumen pH) and contribute to robust, early diagnosis of tricky digestive troubles of cattle.

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Chewing Activity, Saliva Production, and Ruminal pH of Primiparous and Multiparous Lactating Dairy Cows

Cited by 125 publications

References 17 publications

Investigations on automatically measured feed intake amount in dairy cows during the oestrus period

Investigations on automatically measured feed intake amount in dairy cows during the oestrus period

Aditivos químicos e biológicos na ensilagem de cana-de-açúcar: 1. composição química das silagens, ingestão, digestibilidade e comportamento ingestivo

Innate immune responses to metabolic stress can be detected in rumen fluids

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